Fix style errors

beets/autotag/hooks.py

@@ -17,7 +17,7 @@
 from collections import namedtuple
 from functools import total_ordering
 import re
-from typing import Dict, List, Tuple, Iterator, Union, NewType, Any, Optional, \
+from typing import Dict, List, Tuple, Iterator, Union, NewType, Any, Optional,\
     Iterable, Callable, TypeVar
 
 from beets import logging
@@ -41,6 +41,7 @@ except AttributeError:
 
 T = TypeVar('T')
 
+
 # Classes used to represent candidate options.
 class AttrDict(dict):
     """A dictionary that supports attribute ("dot") access, so `d.field`

beets/autotag/mb.py

@@ -14,8 +14,7 @@
 
 """Searches for albums in the MusicBrainz database.
 """
-from typing import List, Tuple, Dict, Optional, Iterator, Iterable, AnyStr, \
-    Union
+from typing import List, Tuple, Dict, Optional, Iterator
 
 import musicbrainzngs
 import re